Probably not. Sounds like you are having buyer's remorse, just go to med school if that is what your heart desires.
You could do a GPR (General Practice Residency) with a lot of medical rotation time and experience the medical specialties that way. In most GPRs, you are at the hospital full time and get a chance to interact with medical departments. At my GPR, we looked forward to the Internal Medicine (2 weeks) and Anesthesia (2 weeks) rotations because it meant we were going to get time to slack off and "observe" the medical residents in those fields. If you were gung ho, however, you could have used those rotations to function as third-year med students or first year residents would. We used to interact with medical residents and fellows in many departments all year in my GPR because we would get called to consult on their patients. This included ER, pediatrics, pediatric ER, cardiology, cancer, transplant, rehab, ob/gyn, psych, and others I'm probably forgetting. I'm sure if you had asked to hang out with them on the hospital floors after clinic (dental clinic always ended at 5), they would probably accommodate your request. Also, hanging out with the oral surgery residents would probably get you a lot of this exposure as well since those guys were always doing lots of medically oriented stuff as part of their clinical duties. Heck if you like it so much, you could stay at the hospital and do a second year of GPR, many programs offer this as well. Or do an Oral Surgery residency.
